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Boat handling

What is the 'kicking strap' (vang) used for?

Short answer

Holding the boom down to control mainsail shape

The kicking strap (also called the vang) pulls the boom downward to prevent it from rising. This controls the twist in the mainsail and maintains an efficient sail shape, particularly when sailing off the wind.

Sources and scope

Reviewed by Richard Moore on . This answer is scoped to united kingdom and general recreational seamanship; check the current chart, publication, local rules and official operational guidance before acting afloat.

Quick check

What is the 'kicking strap' (vang) used for?